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<H1><A NAME="SECTION04010000000000000000">
Notes</A>
</H1>

<P>
<DL COMPACT>
<DT>1.
<DD>The specifications that follow give the calling sequence, purpose,
and descriptions of the arguments of each LAPACK driver and
computational routine (but not of auxiliary routines).
<P>
<DT>2.
<DD>Specifications of pairs of real and complex routines have been merged
(for example SBDSQR/CBDSQR).
In a few cases, specifications of three routines have been merged, one for
real symmetric, one for complex symmetric, and one for complex Hermitian
matrices (for example SSYTRF/CSYTRF/CHETRF). 
A few routines for real matrices have no complex equivalent (for example
SSTEBZ).

<P>
<DT>3.
<DD>Specifications are given only for <EM>single precision</EM> routines.
To adapt them for the double precision version of the software, simply
interpret REAL as DOUBLE PRECISION, COMPLEX as COMPLEX*16 (or DOUBLE COMPLEX), 
and the initial letters S- and C- of LAPACK routine names as D- and  Z-.

<P>
<DT>4.
<DD>Specifications are arranged in alphabetical order of the real routine
name.

<P>
<DT>5.
<DD>The text of the specifications has been derived from the leading comments
in the source-text of the routines. It makes only a limited use of
mathematical typesetting facilities.  To eliminate redundancy, <B><I>A</I><SUP><I>H</I></SUP></B>
has been used throughout the specifications.  Thus, the reader should
note that <B><I>A</I><SUP><I>H</I></SUP></B> is equivalent to <B><I>A</I><SUP><I>T</I></SUP></B> in the real case.

<P>
<DT>6.
<DD>If there is a discrepancy between the specifications listed in
this section and the actual source code, the source code should be
regarded as the most up-to-date.

<P>
</DL>

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<ADDRESS>
<I>Susan Blackford</I>
<BR><I>1999-10-01</I>
</ADDRESS>
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